I had to create a specialized RPP - relapse prevention plan - for being on vacation. (I have specific RPPs for other things too like weddings and holidays with family).
Lots of good ideas already posted above. Most important to me related to going on vacation are having the support of traveling companions that will not put my sobriety in danger and having a way out for when a situation comes up that might trigger a relapse.
Have fun and create lots of memories!